English: "Year by year" — Rabbi Abba bar Memel said: If two lambs were born to him, one on the 15th of the first Adar and one on the last day of the second Adar, the one born in the second Adar completes its year as soon as one day of Adar of the following year arrives, while the one born on the 15th of the first Adar does not complete its year until the 15th of Adar of the following year.
On the daf / in context: The intercalated month affects the reckoning of a firstborn’s year in the same manner as the year of a house in a walled city.
Type of Learning
Derash on the verse (Bekhoros) — the effect of an intercalated Adar on a firstborn’s year.
What Is Learned
An intercalated Adar causes the year of a firstborn born early in the first Adar to be longer than that of a firstborn born at the end of the second Adar.